Print using 150 dpi, glue top half to cardboard, bottom half to other side, and cut into 10 tokens.
Use during setup to indicate which systems each player has "limited movement option" to. (i.e. which 2 system that player needs other player's movement cards to get to.
During setup to help even out the game, you can put less planets on systems were 2 players can't easily go and more planets on systems where everyone can go.
You can also leave these tokens there all game long as a simple reminder of that fact.
